10024559

Properties

Appears in sequences

• Primes with a twin Carmichael number: primes p such that p-2 or p+2 are Carmichael numbers.at n=24A135437
• Numbers k such that at least one of k and k+2 is composite, while for every b coprime to k*(k+2), b^(k-1) == 1 (mod k) and b^(k+1) == 1 (mod k+2).at n=24A194231
• Primes p such that p + 2 is a Carmichael number (A002997).at n=20A272754
• Prime numbersat n=666122